. >> reporter: in an old farmhouse in south hamilton, massachusetts, some amateur filmmakers are hoping to change their lives. >> a little bit lighter shot to show the three war cars going down. >> reporter: these aren't steven spielberg wannabes, they're military veterans and the filmmaking is post traumatic stress therapy. >> i've ot to mental health and counseling and small group therapy still with the embarrassment of having ptsd. >> jeff saren suffered from ptsd. he was almost killed. >> something like this, you're an actor or an actress and you don't have to be yourself. it was natural way to express myself without having to feel like i was violated my own privacy. >> reporter: the program is called the "i was there" workshop. week-long lessons that cull nate in a short film. they conceive, write, shoot, and edit the piece all while collaborating with fellow ptsd suffers. >> out of nowhere a rocket-propelled grenade hit the helicopter. >> he served in vietnam. >> the things that have been coming up in my mind that i haven't thought about in over 40 years, it's -- yeah, it's sort o